I always wondered where Sor Talgrons story was going to go, he seemed quite conflicted by the turn of events in Tales of Heresy
, and then other fluff says he got stationed in the Sol system. Nothing more was mentioned from him really until a breif mention in Mark of Calth
, where he is mentioned as having held the shard of Erebus, which may or may not suggest he is committed to the cause after all.
I suppose this is why the Alpha Legion interest people so much, due to their more than ambiguous and totally unclear loyalties.
, regarding Lhorke..